Cheapest return flights from Denver to Keflavik in June from $577

Best time to book flights for Denver (DEN) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Denver (DEN) to Keflavik (KEF) in June 2025 (see full year).

Return flights

12 Jun - 15 Jun Icelandair direct
13 Jun - 22 Jun Icelandair direct
04 Jun - 11 Jun Icelandair direct
30 Jun - 07 Jul Icelandair direct
01 Jun - 30 Jun Icelandair direct
06 Jun - 09 Jun Allegiant Air
01 Jun - 08 Jun Icelandair direct
03 Jun - 10 Jun Frontier Airlines
06 Jun - 09 Jun Icelandair direct
24 Jun - 01 Jul jetBlue
27 Jun - 04 Jul Allegiant Air
05 Jun - 12 Jun Frontier Airlines
12 Jun - 14 Jun Icelandair direct
29 Jun - 05 Jul Sun Country Airlines
29 Jun - 06 Jul jetBlue
24 Jun - 01 Jul Icelandair direct
18 Jun - 01 Jul Icelandair
26 Jun - 03 Jul Icelandair direct
26 Jun - 06 Jul Icelandair direct
29 Jun - 06 Jul Icelandair direct

Also check the deals for one-way flights from Denver to Keflavik in June.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik